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arXiv · 2312.08647

Toward a Ginsparg-Wilson Lattice Hamiltonian

Michael Clancy
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Abstract

To address quantum computation of quantities in quantum chromodynamics (QCD) for which chiral symmetry is important, it would be useful to have the Hamiltonian for a fermion satisfying the Ginsparg-Wilson (GW) equation. I work with an approximate solution to the GW equation which is fractional linear in time derivatives. The resulting Hamiltonian is non-local and has ghosts, but is free of doublers and has the correct continuum limit. This construction works in general odd spatial dimensions, and I provide an explicit expression for the Hamiltonian in 1 spatial dimension.

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Michael Clancy. 2023-12-14. Toward a Ginsparg-Wilson Lattice Hamiltonian. https://arxiv.org/abs/2312.08647

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